Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

The description goes well beyond the annotations by disclosing that candidate routing improvements are enabled live during tests, that no candidate is currently active, that it currently matches ask_pipeworx exactly, and that it is a full working router rather than a fallback. It also clarifies the experimental nature and the comparison process. This is rich, honest behavioral context beyond readOnlyHint and idempotentHint.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is somewhat long but every sentence carries useful information: the beta relationship, the current no-candidate state, the usage instruction, and the reassurance that it is a fully functional router. The structure front-loads the core identity and then adds relevant operational detail. Only the parenthetical retirement date adds marginal noise.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a universal router with no output schema, the description is reasonably complete: it states argument parity, response shape parity, usage instruction, and experimental status. However, it relies on the agent knowing ask_pipeworx's response shape and behavior, and it does not describe what kind of questions are appropriate. Still, this is sufficient for correct invocation.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, with all six parameters documented as aliases for question. The description adds no new parameter semantics beyond pointing to ask_pipeworx's identical arguments, so it relies on the schema. This meets the baseline for fully documented parameters but does not add extra value.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly identifies the tool as the beta version of ask_pipeworx, an identical universal router with the same 5,767 tools, arguments, and response shape. It explicitly distinguishes this tool from the stable ask_pipeworx by calling out the experimental routing edge. This gives an agent a precise understanding of what the tool does and how it differs from siblings.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description explicitly says to use it 'exactly like ask_pipeworx when you want the newest routing' and explains that results are compared against the stable router. This gives clear context and names the alternative, but it does not explicitly say when NOT to use it or when to prefer the stable ask_pipeworx instead. The current-match state is helpful but not a full exclusion guideline.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.